:root {
    --primary-light-blue: #87ceeb;
    --primary-blue: #0077cc;
    --primary-dark-blue: #005599;
    --secondary-light-blue: #e8f4ff;
    --secondary-blue: #f0f8ff;
    --secondary-dark-blue: #d0e8ff;
    
    --success-color: #0077cc;
    --success-light: #e8f4ff;
    --success-dark: #005599;
    
    --warning-color: #339af0;
    --warning-light: #e8f4ff;
    --warning-dark: #0077cc;
    
    --danger-color: #1976d2;
    --danger-light: #e3f2fd;
    --danger-dark: #0d47a1;
    
    --info-color: #0077cc;
    --info-light: #e8f4ff;
    --info-dark: #005599;
    
    --white: #ffffff;
    --light-gray: #f0f8ff;
    --gray-100: #f5f9fc;
    --gray-200: #e8f4ff;
    --gray-300: #d0e8ff;
    --gray-400: #b0d4f0;
    --gray-500: #7ab8f0;
    --gray-600: #5a9cd6;
    --gray-700: #3a7fc0;
    --gray-800: #1a62aa;
    --gray-900: #0d47a1;
    --black: #0d47a1;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 30px;
    --spacing-4xl: 40px;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 3px rgba(0, 119, 204, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 119, 204, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 119, 204, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 119, 204, 0.15);
    
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-mono: 'Monaco', 'Courier New', monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: inherit;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--black);
    background-color: var(--white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
    flex: 1;
}

header {
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(135deg, var(--primary-light-blue), var(--primary-blue));
    color: var(--white);
    border-radius: 12px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--secondary-dark-blue);
}

header h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.tagline {
    font-size: 1.2rem;
    color: var(--white);
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

.hero {
    text-align: center;
    padding: 50px 40px;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 50px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-300);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue));
}

.hero h2 {
    color: var(--black);
    margin-bottom: 25px;
    font-size: 2.2rem;
    font-weight: 600;
}

.hero p {
    color: var(--gray-600);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 35px;
    line-height: 1.8;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    margin: 8px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 119, 204, 0.3);
}

.login-btn {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.login-btn:hover {
    background-color: var(--primary-dark-blue);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.register-btn {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.register-btn:hover {
    background-color: var(--primary-dark-blue);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.public-btn {
    background-color: var(--gray-600);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.public-btn:hover {
    background-color: var(--gray-700);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 35px;
}

.features {
    margin: 60px 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 50px;
    color: var(--black);
    font-size: 2rem;
    position: relative;
    padding-bottom: 15px;
}

.features h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue));
    border-radius: var(--radius-full);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background-color: var(--white);
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border-top: 4px solid var(--primary-blue);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-top-color: var(--primary-blue);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 25px;
    text-align: center;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
}

.feature-card h3 {
    color: var(--black);
    margin-bottom: 25px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.feature-card ul {
    list-style-type: none;
    padding-left: 0;
}

.feature-card li {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-600);
    position: relative;
    padding-left: 30px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.feature-card li:last-child {
    border-bottom: none;
}

.feature-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
    font-size: 1.1rem;
}

.system-overview {
    background: linear-gradient(135deg, var(--primary-blue), var(--gray-900));
    color: var(--white);
    padding: 50px 40px;
    border-radius: var(--radius-lg);
    margin: 50px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--primary-dark-blue);
}

.system-overview h2 {
    margin-bottom: 25px;
    font-size: 2rem;
    position: relative;
    z-index: 1;
}

.system-overview p {
    max-width: 800px;
    margin: 0 auto 35px;
    line-height: 1.6;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.overview-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
    position: relative;
    z-index: 1;
}

.stat-box {
    background-color: rgba(255, 255, 255, 0.15);
    padding: 30px;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-box:hover {
    background-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.stat-box h3 {
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--white);
}

.stat-box p {
    font-size: 1.1rem;
    opacity: 0.95;
    margin: 0;
}

.getting-started {
    background-color: var(--secondary-blue);
    padding: 50px 40px;
    border-radius: var(--radius-lg);
    margin: 50px 0;
    border: 1px solid var(--gray-300);
}

.getting-started h2 {
    color: var(--black);
    margin-bottom: 25px;
    text-align: center;
    font-size: 2rem;
}

.getting-started > p {
    text-align: center;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 35px;
    margin-top: 40px;
}

.step {
    background-color: var(--white);
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid var(--gray-200);
}

.step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue));
    color: var(--white);
    border-radius: 50%;
    font-weight: bold;
    font-size: 1.5rem;
    margin-bottom: 25px;
    box-shadow: var(--shadow-md);
}

.step h4 {
    color: var(--black);
    margin-bottom: 20px;
    font-size: 1.3rem;
    font-weight: 600;
}

.step p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.95rem;
}

.security-features {
    margin: 60px 0;
    text-align: center;
}

.security-features h2 {
    color: var(--black);
    margin-bottom: 50px;
    font-size: 2rem;
    position: relative;
    padding-bottom: 15px;
}

.security-features h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--gray-600));
    border-radius: var(--radius-full);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.security-card {
    background-color: var(--white);
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-blue);
    text-align: left;
    border: 1px solid var(--gray-200);
}

.security-card:hover {
    transform: translateY(-8px);
    border-left-color: var(--primary-blue);
    box-shadow: var(--shadow-xl);
}

.security-card h4 {
    color: var(--black);
    margin-bottom: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.security-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.6;
}

.tech-stack {
    margin: 60px 0;
    text-align: center;
}

.tech-stack h2 {
    color: var(--black);
    margin-bottom: 50px;
    font-size: 2rem;
    position: relative;
    padding-bottom: 15px;
}

.tech-stack h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue));
    border-radius: var(--radius-full);
}

.tech-icons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 35px;
    margin-top: 40px;
}

.tech-item {
    background-color: var(--white);
    padding: 30px 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    min-width: 150px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue));
}

.tech-item:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: var(--shadow-xl);
}

.tech-item span {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.tech-item p {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin: 0;
}

.db-status {
    background-color: var(--white);
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    margin: 40px 0;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-300);
}

.status-title {
    color: var(--black);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--gray-200);
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

footer {
    background: linear-gradient(135deg, #0077cc, #005599);
    color: var(--white);
    padding: 50px 20px 30px;
    border-radius: var(--radius-lg);
    margin-top: 60px;
    position: relative;
    border-top: 4px solid #005599;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue));
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 25px;
    font-size: 1.2rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 15px;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-blue);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 15px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.footer-section ul li a::before {
    content: '→';
    color: var(--primary-blue);
    font-weight: bold;
    transition: transform 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-light-blue);
    transform: translateX(8px);
}

.footer-section ul li a:hover::before {
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 35px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 10px 0;
    line-height: 1.5;
}

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mt-4 { margin-top: 40px; }
.mt-5 { margin-top: 50px; }

.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mb-4 { margin-bottom: 40px; }
.mb-5 { margin-bottom: 50px; }

@media (max-width: 992px) {
    header h1 {
        font-size: 2.3rem;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .features-grid,
    .overview-stats,
    .steps,
    .security-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header {
        padding: 30px 20px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .hero {
        padding: 30px 20px;
    }
    
    .hero h2 {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.95rem;
        display: block;
        width: 100%;
        margin: 10px 0;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .features-grid,
    .overview-stats,
    .steps,
    .security-grid,
    .tech-icons {
        grid-template-columns: 1fr;
    }
    
    .tech-icons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tech-item {
        min-width: auto;
    }
    
    .getting-started {
        padding: 30px 20px;
    }
    
    .system-overview {
        padding: 30px 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 35px;
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    header h1 {
        font-size: 1.6rem;
    }
    
    header {
        padding: 25px 15px;
        margin-bottom: 25px;
    }
    
    .hero {
        padding: 25px 15px;
        margin-bottom: 25px;
    }
    
    .hero h2 {
        font-size: 1.4rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
        margin: 8px 0;
    }
    
    .features h2,
    .tech-stack h2,
    .security-features h2,
    .getting-started h2,
    .system-overview h2 {
        font-size: 1.5rem;
    }
    
    .feature-card h3,
    .step h4 {
        font-size: 1.2rem;
    }
    
    .container {
        padding: 10px;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
    }
    
    .stat-box h3 {
        font-size: 2rem;
    }
}

:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

.animate-slide-up {
    animation: slideUp 0.6s ease-out;
}

.animate-slide-down {
    animation: slideDown 0.6s ease-out;
}

.animate-slide-in {
    animation: slideIn 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.status-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-success {
    background-color: var(--info-light);
    color: var(--info-dark);
    border: 1px solid var(--info-color);
}

.status-warning {
    background-color: var(--warning-light);
    color: var(--warning-dark);
    border: 1px solid var(--warning-color);
}

.status-danger {
    background-color: var(--danger-light);
    color: var(--danger-dark);
    border: 1px solid var(--danger-color);
}

.status-info {
    background-color: var(--info-light);
    color: var(--info-dark);
    border: 1px solid var(--info-color);
}

.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid rgba(0, 119, 204, 0.3);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.error-message {
    background-color: var(--danger-light);
    color: var(--danger-dark);
    padding: 15px 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
    margin: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.error-message::before {
    content: '⚠️';
    flex-shrink: 0;
    font-size: 1.2rem;
}

.success-message {
    background-color: var(--info-light);
    color: var(--info-dark);
    padding: 15px 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
    margin: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.success-message::before {
    content: '✓';
    flex-shrink: 0;
    font-weight: bold;
    font-size: 1.2rem;
}

.info-message {
    background-color: var(--info-light);
    color: var(--info-dark);
    padding: 15px 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--info-color);
    margin: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.info-message::before {
    content: 'ℹ';
    flex-shrink: 0;
    font-weight: bold;
    font-size: 1.2rem;
}

.fade-enter {
    opacity: 0;
}

.fade-enter-active {
    opacity: 1;
    transition: opacity var(--transition-base);
}

.fade-exit {
    opacity: 1;
}

.fade-exit-active {
    opacity: 0;
    transition: opacity var(--transition-base);
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-200);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark-blue);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

.gap-sm {
    gap: 10px;
}

.gap-md {
    gap: 20px;
}

.gap-lg {
    gap: 30px;
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-75 {
    opacity: 0.75;
}

.cursor-pointer {
    cursor: pointer;
}

.cursor-default {
    cursor: default;
}

.overflow-hidden {
    overflow: hidden;
}

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 992px) {
    .features-grid,
    .overview-stats,
    .steps,
    .security-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .step,
    .security-card {
        padding: 25px 20px;
    }
    
    .tech-icons {
        gap: 20px;
    }
    
    .tech-item {
        min-width: 130px;
        padding: 25px 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .system-overview,
    .getting-started {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .hero h2 {
        font-size: 1.4rem;
    }
    
    .feature-card h3,
    .security-card h4 {
        font-size: 1.2rem;
    }
    
    .stat-box h3 {
        font-size: 2.5rem;
    }
    
    .tech-item {
        min-width: 100%;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@media print {
    .btn,
    .cta-buttons,
    footer {
        display: none;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    .container {
        max-width: 100%;
        padding: 10px;
    }
    
    .feature-card,
    .stat-box,
    .step,
    .security-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}